EP3953036A1 - Dispositif de raccordement d'un tube ou d'un tuyau flexible, de manière préférée d'un capillaire - Google Patents

Dispositif de raccordement d'un tube ou d'un tuyau flexible, de manière préférée d'un capillaire

Info

Publication number
EP3953036A1
EP3953036A1 EP20719970.4A EP20719970A EP3953036A1 EP 3953036 A1 EP3953036 A1 EP 3953036A1 EP 20719970 A EP20719970 A EP 20719970A EP 3953036 A1 EP3953036 A1 EP 3953036A1
Authority
EP
European Patent Office
Prior art keywords
cap
core
core element
torque
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20719970.4A
Other languages
German (de)
English (en)
Inventor
Frank Hirmer
Michael Frank
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Moeller Medical GmbH
Original Assignee
Moeller Medical GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moeller Medical GmbH filed Critical Moeller Medical GmbH
Publication of EP3953036A1 publication Critical patent/EP3953036A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/56—Labware specially adapted for transferring fluids
    • B01L3/563—Joints or fittings ; Separable fluid transfer means to transfer fluids between at least two containers, e.g. connectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/02—Adapting objects or devices to another
    • B01L2200/025—Align devices or objects to ensure defined positions relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/06—Fluid handling related problems
    • B01L2200/0689—Sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/04—Closures and closing means
    • B01L2300/041—Connecting closures to device or container
    • B01L2300/042—Caps; Plugs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0832—Geometry, shape and general structure cylindrical, tube shaped
    • B01L2300/0838—Capillaries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/12—Specific details about materials
    • B01L2300/123—Flexible; Elastomeric
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/60—Construction of the column
    • G01N30/6004—Construction of the column end pieces
    • G01N30/6026—Fluid seals

Definitions

  • the present invention relates to a device for connecting a tube or hose, preferably a capillary.
  • Known torque fittings are usually constructed in two parts.
  • An inner part acts as a supporting core element with a thread
  • an outer part which is designed as a cap element
  • Both components, the core element and the cap element are made of plastic.
  • the torque function between the core element with Ge thread and the cap element with handle is an overload ratchet coupling.
  • torque fittings are their function when the plastic springs back, which is designed as a spring element between the core and cap element and thus forms a ratchet element in a simple manner.
  • Another advantage is the economical production of the core element and the cap element of the torque fitting from plastic using established plastic injection molding.
  • a disadvantage of such a torque fitting structure is that the core element is made of plastic. Plastic threads regularly show an unfavorable setting behavior. The fitting seat must therefore be checked in the screw connection, as otherwise leakage or dead volume can occur in the connection system. Furthermore, a new injection molding tool is required for every manufacturing process in the case of thread variants or design changes at the end face connection of the core element.
  • a device for connecting a tube or hose, before given to a capillary comprising a core element with a threaded area for connecting to a connection socket, and a cap element extending circumferentially around the core element in a longitudinal direction offset to the threaded section, the core element and the cap element are rotatably coupled to one another in such a way that a torque applied to the cap element is transmitted to the core element and, above a threshold value of the torque in a screwing-in rotational direction of the core element, instead of the torque transmission, a relative movement of the cap element relative to the core element occurs.
  • an intermediate element for providing the coupling between the core element and the cap element is arranged between the core element and the cap element.
  • the core element can be assigned a material which is particularly suitable with regard to the screw connection. In this way, a setting behavior of the threaded section of the core element can be reduced compared to the prior art. At the same time, the intermediate element can be further improved with regard to a "ratchet function" between the intermediate element and the cap element by selecting a material different from the core element.
  • the core element comprises a metal or a metal alloy Forces are applied and transmitted by these than with torque fittings with a plastic core element or plastic thread. Furthermore, metals show a lower setting behavior, especially compared to plastic materials.
  • the core element By designing the core element as Metal parts with a thread can overcome the disadvantages of the setting behavior of plastic threads. Furthermore, the core element can be manufactured as a turned part. Constructive changes can thus be implemented without further ado, without tool costs n to be conditional for a new or extensively modified plastic injection molding tool. Greater forces can act on a core element made of metal with a metal thread than on a conventional core element with a plastic thread.
  • the core element can also have a plastic material.
  • the cap element has a plastic material and / or the intermediate element has a plastic material.
  • the plastic material of the core element, the intermediate element and / or the cap element is advantageously a plastic material reinforced with a reinforcing material, preferably ceramic, glass or carbon, for example a composite material.
  • the intermediate element is fixedly arranged on the core element, the intermediate element preferably being an overmolding, preferably a plastic overmolding, of the core element.
  • the intermediate element can also be applied to the core element via 3D printing, sintering or pressing.
  • a form-fit connection between the intermediate element and the core element is formed in a form-fit section in the circumferential direction. This can ensure that the intermediate element does not become detached from the core element even at high torques.
  • the intermediate element has at least one elastic spring element in engagement with an engagement area of the cap element, preferably a plurality of spring elements, preferably evenly distributed in the circumferential direction, the at least one elastic spring element being designed in such a way that torque is transmitted in below the threshold value both directions of rotation can take place, and above the threshold value in the screw-in direction of rotation the spring element experiences an elastic deformation, so that a relative movement between the cap element and the intermediate element is made possible.
  • the spring element is also preferably designed in such a way that torque can always be transmitted counter to the screw-in direction of rotation.
  • the cap element can have at least one elastic spring element, preferably a plurality, which is in engagement with an engagement area of the intermediate element of spring elements preferably evenly distributed in the circumferential direction, the elastic spring element being designed in such a way that torque is transmitted in both directions of rotation below the threshold value, and the spring element undergoes elastic deformation above the threshold value in the screw-in direction of rotation, so that a relative movement between the cap element and the intermediate element is enabled.
  • the spring element is also preferably designed in such a way that torque can always be transmitted counter to the screw-in direction of rotation.
  • the core element is advantageously designed as a turned part. This allows a simple and inexpensive manufacture of the core element as well as ad hoc design changes.
  • a sealing element, a pressure piece, an anti-twist device, a child safety device and / or a predetermined breaking point is also provided, preferably on the core element. As a result, the functionality of the device can be further improved and specific applications can be made possible.
  • Figure 1 is a schematic side view of a device for connecting a Ka pillare
  • FIG. 2 schematically shows a sectional view of the device from FIG. 1; and
  • FIG. 3 schematically shows a side view of the device from FIG. 1 with inserted
  • FIG. 1 a side view of a device 1 for connecting a Ka pillare is shown schematically.
  • the device 1 has a core element 2 with a threaded area 20 for connection to a threaded connection bushing and an extending in a catching direction 5 offset to the threaded section 20 in the circumferential direction, based on the longitudinal direction around the core element 2, extending cap element 3.
  • the core element 2 and the cap element 3 are rotatably coupled to each other in such a way that an external torque applied to the cap element 3 is transmitted to the core element 2, above a threshold value of the torque in a screwing-in direction of rotation of the core element 2, instead of the torque transmission, a relative movement of the cap element 3 relative to the core element 2 takes place, as described in more detail with regard to FIG.
  • FIG. 2 schematically shows a sectional view of the device 1 from FIG.
  • An intermediate element 4 for providing the coupling from the core element 2 to the cap element 3 is provided between the core element 2 and the cap element 3.
  • the core element 2 has a metal alloy.
  • the cap element 3 has a plastic material.
  • the intermediate element 4 has a plastic material that is typically different from the cap element 3.
  • the intermediate element 4 is fixedly arranged on the core element 2, the intermediate element 4 being a plastic encapsulation applied to the core element 2.
  • a form-fit connection between the intermediate element 4 and the core element 2 can be formed in a form-fit section (not shown) in the circumferential direction.
  • the intermediate element 4 has a multiplicity of resilient spring elements 40 which are arranged at a distance from one another around the circumferential direction and are in engagement with an engagement region of the cap element 3. These are designed in such a way that, below the threshold value, torque can be transmitted between the intermediate element 4 and the cap element 3 via the spring elements 40 in both directions of rotation, and above the threshold value in the screwing-in direction of rotation of the threaded section 20 of the core element 2, the spring elements 40 can experience an elastic deformation, so that a relative movement between the cap element 3 and the intermediate element 4 and therefore between the core element 2 and the cap element 3 is made possible. In other words, this provides a ratcheting function.
  • the spring elements 40 are also designed in such a way that torque can always be transmitted counter to the screwing-in direction of rotation.
  • FIG. 3 schematically shows a side view of the device 1 from FIG. 1 with an inserted capillary 6 having a stopper 8 on the side of the cap element 3 and an inserted sleeve 7 on the side of the threaded section 20.

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

L'invention concerne un dispositif (1) servant à raccorder un tube ou un tuyau flexible, de manière préférée un capillaire (6), qui comprend : un élément central (2) pourvu d'une zone filetée (20) destinée à être reliée à une douille de raccordement, et un élément formant capuchon (3) s'étendant dans une direction longitudinale (5) de manière décalée par rapport à la section filetée (20) dans la direction périphérique autour de l'élément central (2). L'élément central (2) et l'élément formant capuchon (3) sont couplés en rotation l'un à l'autre de telle manière qu'un couple de rotation appliqué sur l'élément formant capuchon (3) est transmis sur l'élément central (2) et qu'un déplacement relatif de l'élément formant capuchon (3) par rapport à l'élément central (2) a lieu à la place de la transmission de couple au-dessus d'une valeur de seuil du couple de rotation dans une direction de vissage par rotation de l'élément central (2). Un élément intermédiaire (4) servant à fournir le couple entre l'élément central (2) et l'élément formant capuchon (3) est disposé entre l'élément central (2) et l'élément formant capuchon (3).
EP20719970.4A 2019-04-10 2020-04-09 Dispositif de raccordement d'un tube ou d'un tuyau flexible, de manière préférée d'un capillaire Pending EP3953036A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019002641.1A DE102019002641A1 (de) 2019-04-10 2019-04-10 Vorrichtung zum Anschließen eines Rohres oder Schlauches, bevorzugt einer Kapillare
PCT/EP2020/060294 WO2020208212A1 (fr) 2019-04-10 2020-04-09 Dispositif de raccordement d'un tube ou d'un tuyau flexible, de manière préférée d'un capillaire

Publications (1)

Publication Number Publication Date
EP3953036A1 true EP3953036A1 (fr) 2022-02-16

Family

ID=70295102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20719970.4A Pending EP3953036A1 (fr) 2019-04-10 2020-04-09 Dispositif de raccordement d'un tube ou d'un tuyau flexible, de manière préférée d'un capillaire

Country Status (4)

Country Link
US (1) US20220193680A1 (fr)
EP (1) EP3953036A1 (fr)
DE (1) DE102019002641A1 (fr)
WO (1) WO2020208212A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009022368C5 (de) 2009-05-22 2020-12-17 Dionex Softron Gmbh Steckereinheit und Verbindungssystem für das Verbinden von Kapillaren, insbesondere für die Hochleistungsflüssigkeitschromatographie
US9068566B2 (en) * 2011-01-21 2015-06-30 Biodot, Inc. Piezoelectric dispenser with a longitudinal transducer and replaceable capillary tube
DE102011106696A1 (de) * 2011-07-06 2013-01-10 Labomatic Instruments Ag Schraubelement zum Befestigen einer Leitung an einem Gegenstück
US8888143B2 (en) * 2011-09-23 2014-11-18 Diba Industries, Inc. Torque limiting fastening assemblies and fluid coupling assemblies including the same
US9310008B2 (en) * 2012-03-12 2016-04-12 Idex Health & Science Llc Torque limited fitting
US9322811B2 (en) * 2012-11-12 2016-04-26 Dionex Corporation Zero dead volume robust fluidic connection system
EP3244205A1 (fr) 2016-05-12 2017-11-15 Möller Medical GmbH Unite de raccordement capillaire pour appareils d'analyse et appareils medicaux

Also Published As

Publication number Publication date
US20220193680A1 (en) 2022-06-23
WO2020208212A1 (fr) 2020-10-15
DE102019002641A1 (de) 2020-10-15

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